Pumping apparatus



R. CONRADEH. PUMPING APPARATUS.

APPLICATION HLED MAR. 15, 1920.

1,421,409. Patented July 4, 1922.-

RUDOLPH CONRADER, 0F ERIE, PENNSYLVANIA.

PUMPING APPARATUS.

Specification of Letters Patent.

Applicationfiled liiiarch 1t, 1920. Serial No. 365,913.

To all whom it my concern:

Be it known that I, RUDOLPH 'CONRADER, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Pumping Apparatus, of which the following is a specification.

This pumping apparatus is designed particularly for use in connection with mines but in its broader aspects may be utilized in many relations. Where a pump is used it is desirable to prevent the breaking of the vacuum leading to the pump, that is to say,

to prevent the emptying of the intake pipe through the completion of the pumping action. It is also desirable to control the pump so that when pumping full it will be provided with greater power and when pumping in smaller volumes it may be supplied with a proportionate power. In the mechanism here suggested the power is controlled through the volume of discharge from the pump. v The invention is illustrated in the accompanying drawings as follows I Fig. 1 shows a view of a pump and'its connections. y

Fig. 2 is a section on the line 22 in Fig. 1. r

1 .marks one sump and 2 another sump. These may be at the same level or at different levels. 3 marks the pump having the pump cylinder 4 and a power cylinder 5. The intake 6 leads to the pump cylinder and branch pipes 7 lead to the sumps'.

A controlling valve is arranged in each sump, said valves being made up of a fitting 8 which is adapted to be screwed on to the end of the pipe 7. .A valve connection 10 is 'slidingly mounted in the end of the fitting 8. 'The valve connection is provided with'a. butterfly valve 11 mounted on a shaft 12. A strainer section 13 is mounted on the lower end of the valve section 10. Rods 14 extend from the fitting 8 to the strainer section 13, the strainer section having ears 15 and the fitting 8 having ears 16 throu b which the rods 14 extend. It will be readily seen that by screwing up the rods the sections of the valve may be assembled and clamped together. This provides a convenient means fortaking the valve apart for cleaning and other purposes.

An arm 17 is fixed on the shaft 12 and a float 18 is mounted on the arm 17 Itwill be readily seen that as the level of the liquid in the sump rises and falls the float 18 rises and falls with it thus controlling the valve 11. As the level decreases closing the valve the inlet to the pipe T'is restricted and there may be some inflow of liquid through this restriction even though the level in one sump is much below the other. Finally, however, if there is no liquid discharged to the sump the valve Will be entirely closed and if all the sumps reach this condition the intake will be closed and the pump on discharging the'liquid in its system will run under a vacuum. y

In order to control the action of the pump a discharge 19 leads to a controlling valve 20. The pipe 19 leads initially to the chain ber 21 which has a discharge valve opening 22. .The opening 22 leads to a chamber 25 and the chamber 25 to the discharge line 24. The valve disc 25 is of the size of the ope-ning 22 and has small openings 26 ermittingchamber 21 and the plunger is provided with a minute opening 30 to give it the dash pot effect. A stem 31 extends upwardly from the plunger and a cable 32 runs over a pulley 33, a pulley 34 to an arm 35. The

arm 35 extends from a shaft 36 controlling the butterfly valve 37 im the valve chamber 38. The valve is arranged in the steam supply pipe of the motor 5. -A weight 40 is provided which keeps the cable taut and operates the valve. While-I have shown a fluid actuated motor it will be understood that other types'of motors may be used and that a cable or motor in the discharge may operate such control.

It will be seen that" where there is a full discharge the flow of liquid past the disc 25 will force the disc downwardly and this movement being communicated through the cable opens the butterfly valve toa greater or less extent depending on the depression of the disc 25 and this depression de ends on the volume of the discharge. If no iquid is discharged and the-pump operates under a vacuum the disc will rise to its upper position. and the butterfly. valve will take a position to take care of a minimum or fric- Patented July 4, 1922. I

tion load, and where there is an intermediate discharge the valve will be placed at an in termediate position. I

What I claim as new is 1.,The combination of a pump; an inlet pipe leading to the pump; a valve on the inlet; a float controlling the valve; a discharge pipe for the pump; a motor driving the pump; devices controlling the motor; and means controlled by the volume of discharge from the pump for controlling the devices, said devices acting to reduce the energy of the motor as the discharge decreases.

2. The combination of a pump; an inlet pipe leading to the pump; avalve on the inlet; a float'controlling the valve; a discharge pipe for the pump; a motor driving the pump; a controlling valve for the motor; and means controlled by'the volume of dis.-

charge from the pump for controlling the' controlling valve to close the same as the volume of discharge decreases.

3. The combination of a pump; an inlet pipe leading to the pump; a valve on the inlet; a float controlling the valve; a discharge pipe for the pump; a motor driving the pump; devices controlling the motor; a controlling motor in the discharge and having the movement of its active element varied as the volume of the pump varies; and means for communicating the action of the controlling motor to the devices controlling the first-mentioned motor to decrease the energy of the same as the volume of discharge decreases. V

4. The combination of a pump; an inlet pipe leading to the pump; a valve on theinlet a float controlling the valve; a discharge pipe for the pump; a motor driving the pump; devices controllin the motor; a controlling motor in the ischarge line comprising a body having a disc opening therethrough; a disc in the opening; webs extending from the disc; a plunger connected to the webs and having a minute opening; and means for communicating the movement of the controlling motor to the controlling devices of the first-mentioned motor-to decrease the energy of the same as the volume of discharge decreases.

. 5. The combination of a pump; a discharge pipe leading from the pump; 'a motor driving the pump; a controlling device for the motor; and means controlled by the volume of discharge from the pump for controlling said device to reduce the energy of the motor as the volume of discharge decreases.

6. The combination of a pump; a discharge pipe leading from the pump; a motor driving the pump; a controlling valve for the motor; and means controlledby the volume of discharge from the pump for controlling said valve to close, the same as the volume of discharge from the pumlp decreases.

7. The combination of a pump; adischarge pipe. for the pump a motor driving the pump; a device controlling the motor; a controlling motor in the' discharge pipe having the movement of its active, element varied as the volume of the discharge of pump varies; and means communicating the movement of the controlling motor to the device controlling the first-mentioned motor to decrease-theenergy of said motor as the volume of discharge decreases. x

8. The combination of a pumip; a dischargepipe leading from the pump; a motor; a controlling device for the motor; a controlling motor in the discharge pipe comprising a body having an opening therein;.

a disc in the opening; an extension from the disc; a dash pot plunger on the extension;

and means communicating the movement ofthe disc to the controlling device of the first mentioned motor to decrease the energy of said motor as the volume of discharge decreases.

In testimony whereof I have hereunto set v my hand.

RUDOLPH CONRADER. 

